Bearing for conveyers.



G. W. YOUNKMAN..

BEARING FOR C'ONVEYERS'.

APPLICATION FILED JAN-10.1916.

1,243,375. Patented Oct. 16,1917.

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GEORGE W. YOUNKMAN, OF BROOKLYN, NEW YOBK.

Be rein. convenes.

' To all whom it may concern:

:'ing in Be it known that I, GEORGE W.. YOUNK- MAN, a citizen of the United States, residthe borough of Brooklyn, county of and State of New York, have invented certain new and useful Improvements in Bearings for Conveyers; and I do hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will enable otiiers skilled in the art to which it appertains to make and use the same. I

This invention relates to conveyers of the roller type and more particularly to the construction of the bearings employed at the ends of the conveyer rollers consisting of sections of tubing. .The invention is directed to the provision of an improved form Kings,

of bearing construction for rollers of this type which does not require perforation of the side-frames and trunnions on the rollers extending through such perforations, which permits the rollers to run freely and smoothly and without appreciable wear over an extended period of use, with which the ends of the rollers can be readily closed to prevent the entrance and accumulation of material within the rollers, which is of marked simplicity and possesses great strength, and which may be manufactured at relatively low cost.

In accordance w th the invention, rollers are employed conslsting of sections of tubing and supporting members are set into the ends of these rollers for the support of ball bearings. These supporting members are preferably sheet metal pieces which are pressed into form so as to provide a peripheral flange adapted to' engage the 1nterior wall of the roller and also to provide an integral central projection to which the ball bearing ma be readily aflixed. The ball bearing is pre erably of annular form and consists of inner and outer annular members having balls between them. Such a ball bearing can be readily mounted on the supporting member above referred to with the projection on the supporting mem-- ber extending through the bearing and these two parts maybe made to wedge one on the others Preferably these parts are so positioned relatively that the ball bearings lie within the ends of the roller. For the support of the rollers so constructed, sideframes are provided and on these are mounted a plurality of supports including cylin- Specification of Letters Patent.

Patented Oct. re, rem.

Application filed January 10, 1916. Serial No. 71,182.

drioal receptacles adapted to 'receive the ball bearings on the rollers. These receptacles are preferably formed by circular walls se-.

cured to the side-frames and each of these walls enters the spacesurrounding the corresponding ball bearing and within the end of the roller. 7

1 One of the advantageous characteristics of such a construction is that it does not require perforation of the side-frames or involve the use of trunnions on the rollers extendlng through such perforations. These features of conveyer structures as heretofore made have been very objectionable, particularly as the ends of the trunnions extending beyond the perforations in the sideframesare so apt to catch on the clothing of the operators.

This construction possesses a furtheradvantage in that it permits of closing the ends of circular form by subjecting such plates to dies which form the peripheral adapted to coact with the interior of the roller and the central projection which supports the ball bearing. If the dies be so formed as not to perforate the piece, the securing of the supports in the ends of the section of tubing for the roller effectually closes the ends of the roller. This is of considerable importance in some cases, as for instance, in conveyors for use in dairies, where otherwise milk would work into the interior of the rollers where cleaning operations are difficult or impossible.

Further advantageous features of this construction are that it is very simple, that it possessesa high degree of strength, that it conduces to easy and smooth running of the rollers, that there is little side playof the rollers, that it permits of manufacture at low cost, that it is very compact, and that the roller bearings can be readily renewed when such renewal becomes necessary.

Theseand other features of the invention will be better understood by reference to the following description'taken in connection with the accompanyin drawings which show the preferred embo iment of the invention. In these drawings, Figure 1 is a top View of a section of the conveyer; Fig. 2 is an elevation of the support for the ball hearing which is inserted in the ends of the rollers; Fig. 3 is an elevation of the ball materials to be handled hearing; Fig. 4 is a view of a portion of one of the supports which receive the ball bearmg across the space between the two sideframes inparallel relation and spaced apart a distance dependent on the character of the by the conveyer. Each of the rollers 6 consists of a section of tubing. The side-frames 7 are formed from long lengths of an le iron as indicated. in Fig. 5. These sideames 7 have members '8 secured thereon, each of which is shaped to. form one or which receive the bearings secured to the ends of the rollers. These receptacles are of cylindrical shape and are formed hy circular walls '9 integral with the members 8. Pref; erably, each casting 8 has three of the cylindrical receptacles formed thereon, the cen ters of the receptacles being four inches apart. Thus, when the castings 8 are Secured on the side-frames 7 end to end and rollers mounted in all of the positions, the rollers will be four inches apart. If desired, these same castings maybe spaced apart a distance of four inches and rollers placed only in the two end receptacles, m which casethe rollers will be spaced apart eight inches. To provide for other spacing of the rollers, castings of a length to include only one of the circular wa s dicated by the dotted be provided, these castmgs being spaced apart as desired, and each pair of castings supporting only one roller.- The have flangesll at their lower ends adapted to rest upon the horizontal flanges of the side-frames 7 and to be bolted thereto. For this purpose, bolts 12 and nuts thereon may be employed and the flanges 11 of the castings 8' are preferably provided with transverse walls 13'wh ch serve to prevent. turning of the nuts while. tightening up the bolts.

For mountin the ball bearlngs u on'the ends of the ro lers 6, supporting p ates 14 are provided. Each of these plates is formed from a circular piece of sheet metal which is shaped by suitable dies so as to provide a peripheral flange projection 16. Preparatory to securing the plate 14 in the end of a roller, the metal of the roller-is expanded slightly immediately wardly into adjacent to the end of the roller so as to form a shoulder 17 against which the plate 14 rests when it is inserted in the end of the roller. The extreme edge of then subjected to pressure to force it inhard engagement' with the flange '15 of the plate 14. In this way the 4 mg devices.

more receptacles wlth the requisite and an annular space is provided 9, as inlines 10 in Fig. 4, may

castings 8 provision of trunnions 15 and a centralv the roller is ea ers plate 14 is interlocked with the end of the roller lIISllCh a way as to rigidly secure the plate in the end of the roller without requirmg the use of bolts, rivets, or similar fasten- The projection 16 may be so formed as' to slightly tapering and a shoulder 18 at the end of this tapered surface.

so formed is adapted The projection 16 to receive a ball bearing of. annular-form,

such as that shown in Figs. 3 and 5. This bearing consists of inner and outer annular members 19 and 20,a casing 21 surrounding these parts, and balls 22 between the members 19 and 20. The casing-21 is ,of such size as to grip. the outer 20 and provide a space between one of the flanges of the casing and the adjacent edge of the mem'berQO, inner member 19 is retained withoutimped ing the rotation of the member 19 relatively to themember 20 and casing 21. The opening through the inner annular member 19 is provided with a tapered surface .corre sponding to the taper of the projection 16. In order to secure the ball bearing in posi tion, it is only necessary to insert it over theprojecti on 16 and subject it to a blow,

" whereupon the two tapered surfaces engage upon the plate 14v rigidity. With the parts shearing o roller 6 around the:

so as to hold the bearing thus assembled, the plate 14 and t thereon lie within the end oft 1310180111011} 16 and within the end of the roller adapted to receive the circular wall 9 on the casting 8..

The parts thus constructedare assembledin the manner indicated in Figs. 1 and 5. It will be noted by reference'to these figures that the construction does perforation of the side-frames 7 and the on the rollers extendingthrough such perforations, in which pass there would be rotating parts projectmg beyond the outer surfaces of the sideames. Furthermore, the construction is such that the ends of the rollers 6 are closed by the plates 14 so that it is impossible for material to work into the spaces within'the rollers, from which it could not be readily cleaned. If it be desirable to provide openmgs to the interior of the rollers for any purpose, the ends of the projections 16 may be cut oil". The construction is very simple and permits of manufacture cost. Also, its

plete absence of rivets and'bolts for holding the parts together, such-as might work loose annular member in which one edge of the Y not require the present a surface which is at very low wearing qualities are very good, particularly in that there is a com naeaeaa snugly within the substantially cylindrical receptacles on the members 8 formed by the circular walls 9. It is unnecessary to secure the casings of the ball bearings to the members 8 but merely to insert the ball bearings within the receptacles and allow their casings to rest upon the surrounding Walls 9 and the latter lie within the annular spaces between the bearings and the ends of the rollers.

What I claim is:

The combination of a roller consisting of a section of tubing, a circular sheet metal member located in each end or the roller having a peripheral flange which lies in engagement with the interior Wall oi the roller tions extending within them, an imperferate side frame, a member mounted thereon and a cylindrical receptacle formed on the member receiving the annular ball bearing to support the roller and having its edge entering said annular space so as to he inclosed Within the end of the roller; substantially as described.

In testimony whereof I afix my signature.

GEORGE YOc a N, 

